Sprint 4

Uriel fully implemented (without animations), its behavior will be found
on the wiki.

Malachi prefab didn't seem to be correct from the last commit, updated
it. Now it should be ok.

Ahara's physical ball attack is no longer visible. Though, a problem
kept me from fully implementing the particle treatment and time
coordination between animations and script actions.
Seems to be an issue with the character controller component, which is
not something I know about.